Combined type-writing and computing machine.



W. WRIGHT.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPUCATION HLEDJUNE3.191I.

vwewtoz 2 HUM/mu W. WRIGHT.

Patented 0013.30, 1917.

3 SHEETS-SHEET 2.

Swwntoc Patented Oct. 30, 1917.

3 SHEETS-SHEET 3 m HIM m m T W M H U m w m w m m w m m a w w 7/// M m n w U m M W W b o I I II. II. :3 v 1 M 2 RN g I w 1 Q O X \m q r UNITED STATES PATENT OFFICE.

WALTER WRIGHT, or NEW YORK, N. Y., AssrGNoR 'ro tinnnnwoon oomru'rme' MACHINE COMPANY, on NEW YORK, N. Y.. A ooaroRA'rIoN o'r' vnw YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Application filed June 3, 1911.

To all whom it may concern:

Be it known that I, WALTER WRIGHT, a citizen of the United States, residing in New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Combined Type-Writin and Computing Machines, of which the 0 lowing is a specification.

This invention relates to the mechanism which produces the step-by-step denomina-. tional movement between the master wheels and the systems of computing wheelsof a combined typewriting and computing machine'employing a plurality of simultaneou-sly operating computing heads.

In my application No. 574,813, filed August 1, 1910, are shown means for automatically connecting and disconnecting a traveling member of a computing mechanism with the main carriage of the typewriter, for cross-adding and other purposes. The traveling member of the computing mechanism was connected by means of a lever to a latch or hook, which connected the typewriter carriage to said traveling member; the connection and disconnection of said hook and typewriter carriage being automatically effected. The usual columnstop rack of a tabulator was employed for engagement by said-hook, so that the op erator when setting the column-stop or device to position for writing figures in the proper column on the page could, by the same act, provide for automatically connecting the computing mechanism with the carriage to add the numbers written in such column; p

In my application 569,502, two or more computing devices are simultaneously connected with and disconnected from the typewriter carriage. In my application 574,813, a single master wheel is connected to the carriage by means of a lever and hook. According to the present invention, the lever is forked to engage two master wheels placed one over the other, although it will be understood that said forked lever may be caused to reci rocate' a plurality of systems of computing wheels in place of a plurality of master wheels,'-as illustrated in the drawings.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figur 1 is a sectional elevation from front Specification of Letters Patent.

Patented Oct. 30, 1917.

Serial No. 631,115.

to rear, showing the present improvements applied to an Underwoodfront strike combined, ,typewriting and computing. machine. Fig. l -is an elevation taken on the opposite side fromFig. 1, ofthe forward end of the=lever, showing-its connection-to two master wheel carriages. 1

Fig.2 is a rear elevation of the machine. Fig. 3 illustrates the manner of automatically f disconnecting the. traveling .members of the computing mechanisms from the typewriter'carriage. 1 Fig. 4-. is a sectional plan: of that portion of the upper computing mechanism involved in the present invention; a

i Fig. 5 is a perspective-view ofone of the; hooks and its appurtenances. y. r Fig. 6 is a sectional view showing the hook in cross-section, and also the spring by. which it is lifted to connect it with the typewriter carriage. y

' In the Underwood machine, numeral keys 1 depress levers 2 to vibrate bell cranks 3, and swing type bar-s l up to 'strikerean wardly against the front side of :a platen 5. Said platen is mounted on-a carriage 6, running on tracks 7, 8, and is driven by .aspring barrel 9, and also has a rack lO-meshing with a pinion-x11 connected to an escapement wheel' 12, the escapement dogs, which are operated at every key stroke, -be ing omitted. Therack -10 is hungon arms 13, so that it may be liftedgfrom the pinion 11 to release the carriage.

Tabulator keys 14: are :mounted upon levers15, which, at their rear .ends, raise the stop rods :16, having-decimahstops 17 at their upper ends. erate with interchangeably adjustable 'co umn stops 18 of the ordinary type;'said-column stops being-inserted, as required, in notches 19-, 20, formed in the-top andibottom ofabar 21, which is fixed to thecarriagefi. 5

Each decimal stop-rod has a shoulder 22 These steps may coii coiiperating with a universal bar 23, which a The lower computing mechanism includes a drive shaft 28, having a'bevel pinion 29 meshing "with 'a. pinion 30 upon a square shaft 31, the latter being splined to a muster-wheel 32, which moves along the shaft and has spurs or teeth 33 to engage an internal set 0'1. teeth 34 formed upon a gang of computing wheels 35, the latter mounted in a casing 36 and also having exterior teeth 37'to'mesh 'Withgears'38, the latter having number 'wh'eels 8%). The master Wheel 32 is 'swivel'ed in a, traveling. hollow -mandrel orarbor 40, within which-the master wheel shaft 31"m'ay project, th'es wivel joi-nt being shown "at 4'1, "and permitting the -masterwheel 32 to be rotated by'the' s-haft 331, while said master wheel-is caused "to-1 ravel in aitial dii eetion bythe mandrel orarbor 40.

The mechanismso en described in detail forins' no part-of the-present invention, and

the drive shaft 28 may be driven and controlled either directly by the numeral keys l o-r in tiny ot'liei suitable-manner, as for instance in the mannerset'forth in my pendapplication No. "5G9,'502, filed 'Jime 29, 1910, which application embodies claims covering features'l-ierein disclosed; the present application being'intended only to disclose and cover the forked form of the connecting guide-lever 42. Since the driviflg'ineans for said 'shalft forrn'no part of tlie"present' invention, it is :deemed unnecessary to illustrate thesarne. The'shafh'it will" be understood, is rotated automatically u'pon-t he' depression iof-any' of the numeral keys 1, the eiztent of "rotation depending upon'av liich key is depressed.

"The mandrel '40 is 'moved end-wise by means of a atorwardly and'rearwardly extending lever'42 pivoted midway of its'e'nds by' means of gud'geons '43, so as to swing ina l1'oriz'ontal1 plane. At its forward en'd the lever is slottedwatto engage a pin 45 projecting ctrom the' carriage which carries'themandrel -40 {said :carria'ge comprisi'ng'ki tubev46 slliding'iupon' a fixed rod 47, andial's o an 'arm "48,sliding :upon a fixed liorizo'rita'l fired 49; "the -Ina-n'drel 40 being sbcui'ed'--to:the forward end of the arm "48 by means 0f aset screw 50. The :movement of the rmandrel'tO 'is of icourse' only suflicient torenublethe-master wheel 32 to travel the length of the gang of computing Wheels 35, onewof-which is provided'for each number wheel 39. The rod 47 cooperates with two similar rods \-o'r"studs'47 and 47 all-projeeting' from-ta framework plate or bracket 47, t'oEcanry -a-sma'll plate 4-7, which also slipports* thecnd-of ;rod' 49. It will be 'se'en that 47 and-47 Fig. l ea rry the caisingr36.

lit-itsrm'r end,-ithe ':1ever=42'-has :a. slot 51 !'t0 engage "a spin 52 projecting downfrom'a slide rfi8-,'i'the latter carryingthe stem 54 of a hook 55, adaptedto engage lugs 56 formed upon said stops 18 or upon blades or tappets 57 which are forked to 'fit firito 'the double rack 19, 20, for connectingthia-paper carriage (3 to the master wheel 32 to cause the hitter to travel step hy-step with the paper carriage.

The slide Works in a tubular'guide-or housing '58, which is slotted on its under side at 59 to permit the pin 52 to pass down to the lever 42. The stem .54 of the hook passes through a longitudinal perforation in the slide 753, andis adjustablysec ured to the latter bys'et screws-60, Fig. 2. The rack 21' has at -60 the usual provision 'for longitudinal adjustment. The slide 53 has a feather-=6l,' to fit into'the slot 59, to prevent the slide'and the hook irom turning in the't'ube. The/hook has 'anotch 62 to enable it t engage any of the lugs56. The hook'norina-lly springs up to engage the adjacent lug. For thispurpose the hook-may be made resilient or flexible, and a compression spring 63 Fig. 6 maybe employed to iaid or cause the upward ;1noveme1 1t of the --hook; said spring-lioused-in a boss 64,- and-confined by a screw-65, and pressing ea pl-nngerGG up against a straight-portion of-the under side of the hook, thus holding the letter up while permitting it to move freely iendwise. The boss 64 is formed on .a bushing 67 which is vertically slotted at68to-for na. guide for the hook; said bushing serving as a plugto close this end .of .thetubular housing 58.

As so far described in detail, the mechanism'is disclosedand-clailned in my said pending application 574,813. Accordingto the improvement-madethe subject ,of-the presentapplication the ;lever 42 is forked at 68,the HIJPGD-fOIkbGlILgQ QQDDECtOCl to a carriage 68 "which is similajrin all me spects to said carriage 48,;forming partof an upper computing mechanism,- theparts of which {are designated by the same lettersas the lower computing mechanism already described, With the addition of the-exponent 2 Aswvill be seen at Figs'.- land 1,-the computing' mechanisms are placed one directly over the *other; and both master wheels are driven' bythe-single driveshaft 28, which is extended at 68-to carry: the;;pi-nio n 29 to rotate"-the up per master 4 wheel; shait in the manner ialreedy described infrelation to the ower master -wheel shaft,- so that computationmay 'beperformed simultaneously on the upper and lower oomputingheads. The lever'42' and itsforks being rigid, and the lever-beingfirmlypivoted .upona :wide hearing, it will be seen that the lever servesaas-e guide or controller, whereby the upper and lower master wheels are. caused .to move! accurately in unison.

The present -invention relatessolelyto the iorking of; the -lever,-; and .the following detail 9f description also are disclosed and covered by claims in my said application 574,813.

When the hook is in engagement with one of said lugs 56, it is carried with the paper carriage 6 in the direction of the arrow at Fig. 2, that is, to the right to cause the lever 42 to swing upon its pivot and thereby drive the mandrels and 40*, and the master wheels 32 and 32* to the left at Fig. 4. As the keys 1 are operated to write figures in the column, the master Wheels 32 and 32 are correspondingly rotated in any usual or suitable manner, to rotate the corresponding computing wheels 35 and 35. When the master Wheels have advanced past the computing wheels 35 and 35 of lowest denomination, a cam 69 formed on the hook 55 en gages a projection 70 fixed upon the framework of the machine, and is thereby forced downwardly, to withdraw the hook 55 from that lug 56 with which it has been in engagement. As soon as the hook is released, a returning spring 71 connected to the lever 42 swings the latter in the opposite direction,

7 carrying the master wheels 32 and 32* backwardly or to the right at Fig. 4, that is, toward the computing wheels 35 and 35* of highest denomination; this movement continuing until the hook 55 engages the succeeding lug 56, said hook being pressed up to engage said lug by means of the spring 63, and the hook becoming fully seated in the notch 62, as at Fig. 5. The writing of the numbers in the succeeding column will now proceed, and said numbers will be accumulated on each of said systems of computing wheels by the number wheels 39 and 39", in the manner already referred to.

When returning the carriage 6 to begin a new line of writing, if the hook 55 is in engagement with one of the lugs 56, it is carried to the left at Fig. 2, until a cam edge 72 thereon strikes a stud or roller 73, which may be pivoted upon a screw 74, threaded into the top of the boss 64; and by means of said roller or obstruction, the hook is cammed downwardly and released from the lug 56. The spring 63 immediately lifts the hook again, and the lugs 56 in succession ride freely over a bevel or point 75 formed on the tip of the hook; the last lug in the series being caught and held by the hook when the carriage begins to run in letterfeeding direction.

Variations may be resorted to within the scope of the invention.

Having thus described my invention, I claim:

In a combined typewriting and computin g machine, the combination with two master members, mounted one above another, computing members controlled by said master members, and a typewriter carriage, of means for moving said master members accurately in unison, comprising a rigid guide-lever pivoted intermediate its ends and connected at one end to said carriage, said master members being connected to the other end of said lever; said other end having rigid forks, one fork extending above the other, the upper master member being connected to the upper fork and the lower master member to the lower fork.

WALTER WRIGHT.

Witnesses:

K. FRANKFORT, CHAs. H. GODLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

